网上拍卖作为一种新的交易机制，在商业交易中占的比重越来越大。
As a new business mechanism, online auction takes more and more proportion in the business.
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网上拍卖是新兴起的一种网上交易方式。
Online auction is a sort of new transaction emerged recently.
网上交易和网上拍卖除外。
However, online exchange and online biding are excluded.
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